That "wombat" is the Paca
an interesting animal I have recently
seen on a discovery channel.
Apparently a prized and sought after meat
The interesting thing is this stamp was printed
in the govt printing works Tokyo.
The other air just happens to be the black shade of
a large set of similar stamps, with little aeroplanes
and envelopes in the frame.
The 80c was always the curious one for moi.